Cisco Systems says it will make a major announcement on Tuesday, news that the technology giant says "will forever change the Internet". Shares of Cisco gained 3.65% to close at $26.13 Monday, hitting a new 52-week high of $26.36 intraday, as some analysts speculated that the tech giant is rolling out new gear to help wireless phone companies cope with rising video Web traffic. Cisco had sent out invitations to analysts and the media for a "significant announcement" that it says "will forever change the Internet and its impact on consumers, businesses and governments". Let the speculation begin!